749 research outputs found

    Orthotopic ileal neobladder versus sigmoidal neobladder: a "quality of life" (QOL) survey

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    To compare the quality of life (QOL) in patients with ileal neobladder and sigmoidal neobladder, a retrospective survey was conducted using a formulated questionnaire. Between January and March 1999, a QOL survey was conducted using self-administered questionnaires (EORTC QLQ-C30, IPSS, supplemented with detailed questionnaires about continence, sexual function, and patient’s satisfaction with the selected urinary diversion method) for 78 patients with orthotopic urinary reservoir (OUR) who were followed-up for more than 3 months after cystectomy. Among 78 patients, 63 had OUR using an ileal segment (male/female=59/4, median age: 70.8 years old, median follow-up: 1.7 years). Fifteen patients had OUR using a sigmoidal segment (male/female=13/2, median age: 71.9, median follow-up: 3.9). The QLQ-C30 functional evaluation and the items in relation to sexual function showed no diff erences between the 2 groups. Concerning the voiding condition, bladder emptying, frequency, and urgency, scores in the sigmoidal OUR group were signifi cantly higher. The QOL score concerning voiding conditions, daytime, and nighttime continence and quantity of pad showed a better score in the ileal OUR group. Concerning the satisfaction with methods of urinary diversion, patients in the sigmoidal OUR group expressed less satisfaction than their preoperative expectations. Considering several postoperative voiding conditions, ileal OUR seems superior to sigmoidal OUR

    A primary aorto-duodenal fistula associated with an inflammatory abdominal aortic aneurysm: a case report.

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    Primary aorto-enteric fistula (PAEF)is a serious complication of abdominal aortic aneurysm(AAA). We report a patient with PAEF associated with inflammatory AAA who underwent emergent surgery. A 52-year-old male presented with recurrent hematemesis. A computer tomography scan showed a sealed rupture of the AAA adjacent to the duodenum. At surgery, a coin-sized PAEF was noted. The aorta was replaced with a Dacron graft in situ . Histological examination revealed the characteristics of an inflammatory AAA. The postoperative course was uneventful, and there has been no evidence of infection during a follow-up period of 3 years. We discuss the etiologic and surgical considerations regarding this unusual entity.</p

    Laser-induced-fluorescence measurement of thermal conductivity in warm dense matter generated by pulsed-power discharge

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    Thermal conductivity in warm dense matter is one of the interests for thermonuclear fusion scenarios. Alternative inertial confinement fusion, which is a fast ignition with applied magnetic field [1], has been considered to improve the coupling efficiency. The target behavior of the fast ignition with applied magnetic field depends on the anisotropic thermal conductivity. The magnetic confinement fusion (MCF) [2] Up to now, the heat load on the divertor in previous MCF systems has been unreached parameter. Thus, to predict properties of the divertor under these heat loads, several experiments have been performed using several methods[3-6]. To predict the performance of the tungsten divertor in MCF, we should analyze not only metallurgical properties but also thermophysical properties of ablated tungsten..

    Anterior urethral recurrence of superficial bladder cancer: its clinical significance.

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    The aim of this study was to reveal the clinical features of anterior urethral recurrence in patients with superficial bladder cancer, and to determine the appropriate treatment. Three hundred and three patients with superficial bladder cancer, who were newly diagnosed and initially treated conservatively in our hospital between 1965 and 1990, were followed for at least 5 years and their clinical outcomes were analyzed. Clinical factors, including anterior urethral recurrence, were evaluated statistically regarding tumor progression. Eight patients (2.6%) had anterior urethral recurrence following superficial bladder cancer. Twenty-four patients (7.9%) had tumor progression and 149 (49.2%) had tumor recurrence. In a multivariate analysis using a logistic model, anterior urethral recurrence was the most important factor, followed by histological grade. Four of 5 patients who were treated for anterior urethral recurrent tumors by transurethral resection showed progression and died of the cancer within one year. Two of the remaining three patients who underwent radical cysto-urethrectomy at the time of anterior urethral recurrence survived. Anterior urethral recurrence following superficial bladder cancer is a predictor for rapid subsequent malignant progression. Once there is anterior urethral recurrence, radical intensive therapy, including radical cysto-urethrectomy, should be carried out immediately.</p

    Prospective longitudinal comparative study of health-related quality of life in patients treated with radical prostatectomy or permanent brachytherapy for prostate cancer

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    To determine health-related quality of life (HRQOL) after radical retropubic prostatectomy (RRP) or permanent prostate brachytherapy (BT), third party-conducted QOL surveys were prospectively compared. Between 2004 and 2005, 37 patients underwent RRP and 36 were treated with BT. A QOL survey consisting of the Medical Outcomes Study 36-Item Short Form (SF-36), the University of California, Los Angeles, Prostate Cancer Index (UCLA-PCI) and the International Prostate Symptoms Score (IPSS) was completed prospectively by a research coordinator at baseline, and at 1, 3, 6 and 12 months after treatment. The RRP patients scored well in general QOL except at 1 month after surgery, with their mental health better than at baseline by 6 months after surgery. Disease-specific QOL in RRP patients received a low score at 1 month for both urinary and sexual function, though urinary function rapidly recovered to baseline levels. BT patient QOL was not affected by the therapy except in the IPSS score. However, general and mental health scores in BT patients were inferior to those in RRP patients. This prospective study revealed differences in QOL after RRP and BT. These results will be helpful in making treatment decisions.</p

    Analysis on the cryogenic stability and mechanical properties of the LHD helical coils

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    Transient normal-transitions have been observed in the superconducting helical coils of LHD. Propagation of a normal-zone is analyzed with a numerical simulation code that deals with the magnetic diffusion process in a pure aluminum stabilizer. During excitation tests, a number of spike signals are observed in the balance voltage of the helical coils, which seem to be caused by mechanical disturbances. The spike signals are analyzed by applying pulse height analysis and the mechanical properties of the coil windings are investigated
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